MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains multiple embedded links, including one to a redirector infrastructure associated with malicious activity. The document body and heuristics indicate a lure for downloading 'Adobe Acrobat Reader 2019 free', which is a common phishing tactic. The presence of a link farm suggests an attempt to distribute potentially malicious files or redirect users to phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://ttraff.ru/pify?keyword=adobe+acrobat+reader+2019+free In PDF document text
- http://files.skylineelectricmn.com/uploads/1/3/2/6/132682134/rasokisaxiwum_nivawosanofiz.pdfIn PDF document text
- http://tidowij.jonathanrudy.com/uploads/1/3/1/8/131857152/3326981.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/5737/9488/files/21518180512.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9775/9643/files/306660031.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gowaluzefep.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9812/1119/files/ansys_workbench_book_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1966/3522/files/autumn_leaves_piano_sheet_music_eva_cassidy.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6737/5770/files/zupexotavidowudasanu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7373/2768/files/32400650478.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005b3d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5B3D | 5416 bytes |
SHA-256: c6c2b7f69dc4ca5e930289085ecb90e76644e8e1ca0bf1b8967bccd3464b3f8c |
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font_01_sfnt_off00006dbc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6DBC | 10388 bytes |
SHA-256: e96a4979ea6f60b405d424d7155c30429361021f9907cdb55ef6adf97a361b8a |
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